Deep Sky Object in Autumn
UGC2275, NGC1085 (Galaxies in Cetus)



Date & Time: Jan 25 2025, from 18:29 to 19:24 JST(+0900)
Composed 10 shots with 6 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with IDAS LPS-P1 Light-pollution suppression filter
Auto-guided with Meade LX200 Equatorial & Lacerta M-GEN
Digital Camera: Nikon D810A
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(4080×4080)
Device Size...20×20mm
Sensitivity...ISO4000, White Balance...Daylight



UGC2275 / Galaxy, type Sm:
R.A.02h 47m 57.1s (2000.0)
Dec.+03°53' 16" (2000.0)
Apparent Size5.5'
Radial Velocity+1025km/s
Magnitude13.6
Distance45 million light yrs.
Group of GalaxiesNGC1068 Group
Other IDsCGCG 415-10, DDO 28
PGC 10588
NGC1085 / Galaxy, type SA(s)bc:
R.A.02h 46m 25.5s (2000.0)
Dec.+03°36' 27" (2000.0)
Apparent Size2.9×2.0'
Radial Velocity+6980km/s
Magnitude13.1
Distance300 million light yrs.
Group of Galaxies -
Other IDsUGC 2241, CGCG 389-8
MCG +0-8-10, PGC 10498
IRAS 2438+323
Visible in the upper left of the image is UGC 2275, a very faint irregular galaxy. It is located 1.3 degrees northeast of γ Ceti, in the head of the constellation Cetus. The galaxy belongs to the galaxy group centered around M77. Although faint and dim, it spans more than 5 arcminutes, and you can observe an extremely faint ring-like structure surrounding its outer regions.
Located 30 arcminutes southwest of UGC 2275, the small spiral galaxy visible in the lower right of the image is NGC 1085. Although its size is only 3 arcminutes, it appears brighter and more prominent. NGC 1085 is more than six times farther away than UGC 2275, and there is no direct connection between them.




UGC1281

UGC2302


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